97F9850 97F9970 50+5 uF/MFD 370 or 440 VAC Dual Run Circular Start Capacitor

Key Features

• Capacitance Rating: 50 + 5 Microfarad (uF/MFD)
• Voltage Rating: Dual rated for 370 VAC or 440 VAC applications
• Capacitance Tolerance: ±6%
• Shape: Round / Circular
• Dimensions: 2.36 inch (60 mm) diameter
• Terminals: Three terminals for Common, Compressor, and Fan Motor
• Construction: Aluminum case, oil-filled design for heat dissipation
• Safety: UL 810 listed; contains no PCBs

Replaces / Cross-Reference Part Numbers

• 97F9850
• 97F9970
• Also replaces other brand capacitors with matching 50/5 MFD and 370V or 440V specifications.

Compatibility & Fitment

• For use in a wide range of HVAC systems, central air conditioners, and heat pumps.
• Functions as a direct replacement for units from various manufacturers requiring a 50/5 uF dual run capacitor.
• Always verify the MFD and voltage ratings of your original capacitor before purchasing.

When to Replace

• Compressor or fan motor hums but fails to start.
• Component runs intermittently or not at all.
• The capacitor case is visibly swollen, bulging, or leaking oil.
• Capacitance tests outside the component's rated tolerance.

Installation Tips

• Disconnect all electrical power to the HVAC unit before servicing.
• Discharge the existing capacitor to avoid electrical shock.
• Note the wire placement on the old capacitor's "C", "HERM", and "FAN" terminals before disconnecting.
• A 440V rated capacitor can safely replace a 370V capacitor, but a 370V cannot replace a 440V.
• Ensure the 50 MFD and 5 MFD ratings match the original part precisely.